G1205 Vortex visualization of sawtooth leading edge delta wings and pressure analysis on the surface(2)

Aerodynamic forces and moment of a sawtooth leading edge delta wing were experimentally studied in a low-speed wind tunnel. We researched the effects of the sawtooth leading edge on the aerodynamics and the leading edge vortices through the pressure measurement on wing surface. In the result, it was found that the minimum pressure and its location on the wing were different from those of the base delta wing without a sawtooth leading edge. It was owing to the interaction of the primary vortex, namely a leading edge vortex, with the secondary vortex from the sawtooth leading edge. It increased the C_L over 10%